M4-0.7 Nylon Insert Locknuts / Steel (Cl. 8) / Black Oxide / DIN985
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Product Description
M4-0.7 Nylon Insert Locknuts / Steel (Cl. 8) / Black Oxide / DIN985
Specifications
| Material | Steel |
|---|---|
| Finish | Black Oxide |
| Grade | Class 8.8 |
| Size | M4-0.7 |
| Thread Pitch | 0.7mm |
| Thread Class | Coarse |
| Thickness | 3.2 |
| Standard | DIN 985 |
| RoHS Compliance | RoHS Compliant |
| Measurement System | Metric |
RoHS Compliant
Frequently Asked Questions
What does the metric class number mean?
The first number indicates tensile strength (e.g., 12 = 1,200 MPa). The second number is the yield-to-tensile ratio. So Class 12.9 has 1,220 MPa tensile strength and yield at 90% of tensile. Class 12.9 is equivalent to inch Grade 8.
How many times can I reuse a nylon insert lock nut?
Nylon insert lock nuts can typically be reused 5-7 times in non-critical applications before the nylon insert loses its elasticity. For safety-critical applications (automotive suspension, structural connections), use new lock nuts each time. Temperature range is -65°F to +250°F (-54°C to +121°C).
Does Black Oxide finish provide corrosion protection?
Black Oxide provides mild corrosion resistance through a controlled oxidation process. It is dimensionally stable (no plating buildup), will not chip or flake, and is suitable for indoor use. For outdoor or wet environments, additional oil coating or a different finish (zinc, stainless) is recommended.
.5 Nylon Insert Locknuts / Steel (Cl. 8) / Black Oxide
Family: D985B
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Technical Specifications
Thread Size
M4-0.7
Thread Type
Metric Coarse
Material
Steel
Grade
Class 8.8
Thread Pitch
0.7mm
Thickness
3.2
SKU
M4D985B-2000